UPDATE, 4:52 p.m. -- Robertson didn't appear in court today since he was causing some sort of disturbance outside of court, KRDO-TV reported. He's scheduled to be back in court Tuesday.
Humphrey appeared in court and is scheduled to be back in front of a judge on Sept. 6.
The judge did not talk on Monday about whether to extradite the couple back to California, KRDO said.
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PUEBLO, Colo. - The man and woman suspected of being involved in a murder and kidnapping just south of Kern County are due in Colorado courtroom Monday.
Joshua Robertson and Brittney Humphrey are scheduled to appear before a judge in Pueblo County at 1:30 PT, according to jail records.
RELATED: Three children in kidnapping found in New Mexico, suspects arrested in Colorado
The pair was arrested last week after a nationwide manhunt. Police say they're behind the murder of Humphrey's sister, Kimberly Harvill -- whose body was found in Gorman two weeks ago -- and the kidnapping of Harvill's three children, later found safe in New Mexico.
RELATED: Two suspects wanted in kidnapping of dead woman's three children